Product Specifications
| Parameter | Details |
|---|
| Part Name | Double V-Belt Sea Water Pump Pulley |
| Part Number (OEM Reference) | 21214596, 3858229, 3862487, 3812697 |
| Brand Compatibility | Volvo Penta |
| Machine Model Fitment | Volvo Penta 4.3L, 5.0L, 5.7L engines and variants including 4.3GIJWTR, 4.3GiPEFS, 4.3GIPWTC, 4.3GIPWTR, 4.3GL-A/B/C/D, 4.3GLPEFS, 4.3GLPWTC, 4.3GLPWTR, 4.3GSJWTR, 4.3GSPWTC, 4.3GSPWTR, 5.0GiPEFS, 5.0GiPWTR, 5.0GL-A/B/C/D/E, 5.0GLPEFS, 5.0GLPWTR, 5.7GL-A/B/C/D/E, 5.7GSIPEFS, 5.7GSIPWTR, 5.7GSiPWTRCE, 5.7GSPEFS, 5.7GSPWTR |
| Material | High-strength cast iron with precision-machined groove surfaces |
| Condition | New Aftermarket |
| Warranty | 6-month manufacturer defect warranty |
| Packaging | Individual corrugated box with EPE foam protection |
Compatible Models
| Brand | Applicable Models |
|---|
| Volvo Penta | 4.3L, 5.0L, 5.7L marine engines and all listed variants (see full list above) |
Tired of Belt Slippage and Overheating on Your Volvo Penta 4.3L/5.0L/5.7L? Get the Right Double V-Belt Sea Water Pump Pulley (21214596 / 3858229)
Marine engine operators face real downtime when seawater cooling fails — a single overheated engine can halt charter operations or commercial fishing for days. Counterfeit pulleys wear unevenly, cause belt misalignment, and trigger cascading failures in raw water systems. OEM replacements often take 3+ weeks to arrive, while local suppliers rarely stock this exact double V-belt configuration for Volvo Penta’s legacy marine powertrains.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This double v-belt sea water pump pulley is manufactured in ISO 9001-certified facilities and undergoes pre-shipment performance validation against original Volvo Penta torque transfer and alignment specs. With 10 years of marine engine parts export experience and over 10,000 SKUs in active inventory, XUNPO delivers verified replacements for Volvo 4.3L, 5.0L and 5.7L seawater pumps — no guesswork, no delays, no compromise on fit or function during critical engine maintenance.
Where This Part Works
This pulley operates under continuous load in marine environments — from inland river charters and coastal ferries to offshore support vessels and commercial trawlers. It drives the seawater pump that cools the engine block, exhaust manifold, and heat exchanger. In saltwater conditions, precise belt tension retention and corrosion-resistant surface integrity are essential to prevent slippage, cavitation, or thermal shock damage. That’s why it’s trusted by port equipment operators and marine repair centers across Southeast Asia, the Mediterranean, and the Gulf Coast.
Engineering Details That Matter
The pulley features dual precision-ground V-grooves matching the exact 34° included angle and depth tolerance required by Volvo Penta’s original double-belt drive system — deviations as small as 0.15 mm cause premature belt edge wear. Its cast iron body is stress-relieved and machined to ≤0.05 mm runout tolerance, ensuring smooth rotation at up to 4,200 RPM without vibration-induced bearing fatigue. Surface hardness is controlled to 220–240 HB to resist groove deformation under sustained 120 Nm torque loads. Each unit receives a phosphate + oil anti-corrosion finish tested to 96-hour neutral salt spray (NSS) per ASTM B117 — critical for long-term reliability in high-humidity and saline exposure.
The Real Cost of Wrong Parts
A substandard pulley may cost 20% less upfront but leads to belt shredding within 100 operating hours, unplanned dry-dock time, and secondary damage to the seawater pump shaft or housing. Industry data shows incorrect pulley geometry increases raw water flow variance by up to 37%, accelerating heat exchanger scaling and reducing engine service intervals by 40%. True total cost of ownership includes labor (average $120/hr for certified marine mechanics), lost revenue ($2,500–$8,000/day vessel idle time), and repeat diagnostics. This replacement pulley meets Volvo Penta’s dimensional and material specifications — delivering predictable performance and full lifecycle value.
Why Customers Trust XUNPO
• We source exclusively from ISO 9001-certified factories and perform incoming material inspection on every batch.
• Every pulley undergoes functional testing: groove geometry verification, dynamic balance check, and surface finish audit before shipment.
• 6-month warranty covers manufacturing defects — no questions asked, no restocking fees.
• 10 years exporting to 120+ countries, with documented repeat orders from marine workshops in Greece, Chile, Nigeria, and Thailand.
• Our 20-person technical team includes 8 certified marine diesel specialists who verify part compatibility using OEM service manuals and real-world teardown data.
• Guangzhou warehouse holds 10,000+ commonly used marine and construction parts — this double v-belt sea water pump pulley is stocked and ready to ship.
Packaging & Shipping
- Individually packed in rigid corrugated box with custom-cut EPE foam cradle to prevent transit damage
- In-stock items shipped within 2–5 working days after payment confirmation
- Flexible logistics: DHL/FedEx express (3–7 days), air freight (7–12 days), or sea freight (25–40 days)
- Real-time tracking number provided upon dispatch, with proactive delay alerts
- MOQ is 1 piece — designed for urgent repairs and fleet spares planning
Get Your Double V-Belt Sea Water Pump Pulley Now
Your Volvo Penta engine shouldn’t wait weeks for cooling system reliability. Send us your part number (e.g., 21214596), engine model (e.g., 5.7GL-A), and quantity — we’ll email a competitive quote within 24 hours. First-time customers may request a sample for physical verification. With Guangzhou warehouse stock and same-day processing, your pulley ships fast — because every hour your vessel sits idle costs money.
Frequently Asked Questions
Q: Is this an original Volvo Penta part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, produced in ISO 9001-certified facilities to match original Volvo Penta dimensions, material grade, and performance requirements.
Q: How do I confirm this pulley fits my specific engine variant?
A: Provide your full engine model number (e.g., 4.3GIPWTR) or nameplate photo — our marine diesel specialists will verify compatibility and reply within 2 hours.
Q: What is the warranty coverage?
A: 6-month warranty against manufacturing defects. If the pulley fails due to material or workmanship issues, we replace it at no cost.
Q: What is the minimum order quantity?
A: 1 piece — no bulk requirement. Ideal for emergency repairs or verifying fit before larger orders.
Q: How quickly can I receive this pulley?
A: In-stock units ship within 2–5 working days. Express courier options (DHL/FedEx) deliver to most ports and marinas in 3–7 business days.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample unit for physical evaluation and fit-check prior to bulk purchase.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
